Help me name a female character

I can't decide what should I name my character. My previous picks were Alice, Anna, Lottie and Jennie. So I want to rename her again! She is 13 years old, very skinny, rather short, has straight long dark brown hair, very big blue eyes and white skin. She is a child prodigy. She lives in central London but her mother is French and her father is English. She is very shy. What name do you think suits her? Middle names are probably CatherineSophia or CatherineElodie. Last name is Stewart. Thank you